feat: add profile CLI command

[LuisFigueroaG]

Summary

• Add arnio profile --input FILE --format text|json|markdown
• Print compact text summaries with quality score, row/column counts, null counts, duplicates, and top suggestions
• Emit DataQualityReport.to_dict() as JSON and DataQualityReport.to_markdown() as Markdown
• Document the command and cover it in CLI subprocess tests

Closes #2582

Validation

• uv run pytest -q tests/test_cli.py (21 passed)
• uv run ruff check arnio/cli.py tests/test_cli.py
• uv run ruff format --check arnio/cli.py tests/test_cli.py
• uv run pytest -q (3741 passed, 110 skipped)
• uv run ruff check .
• uv run ruff format --check . (fails on existing repository formatting baseline: 34 files would be reformatted)
• uv run pyright (fails because pyright is not installed in the uv environment)

[vercel]

@LuisFigueroaG is attempting to deploy a commit to the xtylishanish-gmailcom's projects Team on Vercel.

A member of the Team first needs to authorize it.